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Select a method of breaking seed dormanc...

Select a method of breaking seed dormancy in which after ripening treatment is given at low temperature (`0-10^(@)C`) in the presence of `O_(2)`.

A

Scarification

B

Stratifiaction

C

Vernalisation

D

Photoperiodism

Text Solution

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The correct Answer is:
To break seed dormancy using a method that involves after-ripening treatment at low temperatures (0-10°C) in the presence of oxygen, we can follow these steps: ### Step-by-Step Solution: 1. **Understand Seed Dormancy**: Seed dormancy is a survival mechanism that prevents seeds from germinating until conditions are favorable. Different methods can be used to break this dormancy. 2. **Identify the Methods**: The options provided include: - Scarification - Stratification - Vernalization - Photoperiodism 3. **Analyze Each Method**: - **Scarification**: This method involves physically breaking or weakening the seed coat to promote germination. It does not specifically involve low temperatures or oxygen. - **Stratification**: This method involves placing seeds in a moist environment at low temperatures (0-10°C) to simulate winter conditions, which helps to break dormancy. Oxygen is typically present in this process. - **Vernalization**: This process is aimed at inducing flowering in plants by exposing them to cold temperatures but does not directly relate to seed dormancy. - **Photoperiodism**: This refers to how plants respond to the length of day and night, which is not related to breaking seed dormancy. 4. **Select the Correct Method**: Based on the analysis, the method that fits the criteria of breaking seed dormancy through after-ripening treatment at low temperatures (0-10°C) in the presence of oxygen is **Stratification**. 5. **Conclusion**: Therefore, the correct answer to the question is **Stratification**.
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